| useful(adjective, direct, active, valuable, real) |
| PI |
| actor(noun, agent, representative, manager, deputy) |
| adequate |
| dynamic(adjective, active, animate, living, running) |
| going(adjective, action, active, awareness, effective) |
| important(adjective, powerful, active, useful, running) |
| intelligence agent(noun, expression, idiom) |
| investigator(noun, plant, agent, mole, gumshoe) |
| live(adjective, direct, energetic, lively, active) |
| mechanic(noun, agent) |
| operant |
| potent(important, powerful, effective) |
| significant(adjective, active, useful, running, beneficial) |
| busy(adjective, running, functioning, operational) |
| craftsman(noun, agent) |
| detective(noun, plant, agent, spy, mole) |
| executor(noun, agent, representative, manager, deputy) |
| forceful(adjective, strong, power, valid, legal) |
| in operation(expression, adjective, active, useful, real) |